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<div class="title">nrf51/Source/ext_sensors/nRF6350/nRF6350.c</div>  </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Copyright (c) 2008-2012 Nordic Semiconductor. All Rights Reserved.</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * The information contained herein is property of Nordic Semiconductor ASA.</span>
<a name="l00004"></a>00004 <span class="comment"> * Terms and conditions of usage are described in detail in NORDIC</span>
<a name="l00005"></a>00005 <span class="comment"> * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensees are granted free, non-transferable use of the information. NO</span>
<a name="l00008"></a>00008 <span class="comment"> * WARRANTY of ANY KIND is provided. This heading must NOT be removed from</span>
<a name="l00009"></a>00009 <span class="comment"> * the file.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> */</span>
<a name="l00012"></a>00012 
<a name="l00013"></a>00013 <span class="preprocessor">#include &quot;nrf6350.h&quot;</span>
<a name="l00014"></a>00014 <span class="preprocessor">#include &quot;nrf_delay.h&quot;</span>
<a name="l00015"></a>00015 <span class="preprocessor">#include &quot;<a class="code" href="twi__master_8h.html" title="Software controlled TWI Master driver.">twi_master.h</a>&quot;</span>
<a name="l00016"></a>00016 
<a name="l00017"></a>00017 <span class="comment">/*lint ++flb &quot;Enter library region&quot; */</span>
<a name="l00018"></a>00018 
<a name="l00019"></a>00019 <span class="preprocessor">#define DDRAM_ADR     0x80      //!&lt; Write to DDRAM AC</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define DDRAM_WR      0x40      //!&lt; Write to DDRAM</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define FUNC_SET      0x00      //!&lt; Enter LCD Function settings</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define LCD_ADDR      0x3E      //!&lt; LCD display adr</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#define JS_ADDR       0x3F      //!&lt; Joystick adr</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="preprocessor">#define X 0                     //!&lt; X direction in pos 0 of joystick array</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="preprocessor">#define Y 1                     //!&lt; Y direction in pos 1 of joystick array</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span>
<a name="l00028"></a>00028 
<a name="l00029"></a>00029 <span class="comment">//static void nrf6350_nrf6350_lcd_set_instruction(uint8_t instr);</span>
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <span class="preprocessor">#define BUF_LEN 32                  //!&lt; LCD data buffer length</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="keyword">static</span> uint8_t data_buffer[BUF_LEN];
<a name="l00033"></a>00033 <span class="keyword">static</span> uint8_t empty_str[18] = {DDRAM_WR, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>, <span class="charliteral">&#39; &#39;</span>}; 
<a name="l00034"></a>00034 
<a name="l00035"></a>00035 
<a name="l00036"></a>00036 <span class="keyword">static</span> <span class="keywordtype">bool</span> nrf6350_lcd_set_instruction(uint8_t instr)
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038   nrf_delay_us(10000);
<a name="l00039"></a>00039   data_buffer[0] = FUNC_SET;
<a name="l00040"></a>00040   data_buffer[1] = instr;
<a name="l00041"></a>00041   <span class="keywordflow">return</span> <a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>);
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043 
<a name="l00044"></a>00044 <span class="keywordtype">bool</span> nrf6350_lcd_clear(<span class="keywordtype">void</span>)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046   nrf_delay_us(10000);
<a name="l00047"></a>00047   data_buffer[0] = FUNC_SET;
<a name="l00048"></a>00048   data_buffer[1] = (uint8_t)(DDRAM_ADR + LCD_UPPER_LINE);
<a name="l00049"></a>00049   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00050"></a>00050     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00051"></a>00051   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, empty_str, 18, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00052"></a>00052   {
<a name="l00053"></a>00053     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00054"></a>00054   }
<a name="l00055"></a>00055   data_buffer[1] = DDRAM_ADR + LCD_LOWER_LINE;
<a name="l00056"></a>00056   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00057"></a>00057     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00058"></a>00058   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, empty_str, 18, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00059"></a>00059     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00060"></a>00060   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062 
<a name="l00063"></a>00063 <span class="keywordtype">bool</span> nrf6350_lcd_set_contrast(uint8_t contrast)
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065   nrf_delay_us(10000);
<a name="l00066"></a>00066   data_buffer[0] = FUNC_SET;
<a name="l00067"></a>00067   data_buffer[1] = 0x70 | contrast;
<a name="l00068"></a>00068   <span class="keywordflow">return</span> <a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 
<a name="l00071"></a>00071 <span class="keywordtype">bool</span> nrf6350_lcd_on(<span class="keywordtype">void</span>)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073   nrf_delay_us(10000);
<a name="l00074"></a>00074   data_buffer[0] = FUNC_SET;
<a name="l00075"></a>00075   data_buffer[1] = 0x0C;
<a name="l00076"></a>00076   <span class="keywordflow">return</span> <a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 
<a name="l00079"></a>00079 <span class="keywordtype">bool</span> nrf6350_lcd_off(<span class="keywordtype">void</span>)
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081   nrf_delay_us(10000);
<a name="l00082"></a>00082   data_buffer[0] = FUNC_SET;
<a name="l00083"></a>00083   data_buffer[1] = 0x08;
<a name="l00084"></a>00084   <span class="keywordflow">return</span> <a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>);
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086 
<a name="l00087"></a>00087 <span class="keywordtype">bool</span> nrf6350_lcd_init(<span class="keywordtype">void</span>)
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga148f1dd10bc0248c6c6c5336ce07a540">twi_master_init</a>())
<a name="l00090"></a>00090     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00091"></a>00091   <span class="keywordflow">if</span> (!nrf6350_lcd_set_instruction(0x38))                 <span class="comment">// Function set</span>
<a name="l00092"></a>00092     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00093"></a>00093   <span class="keywordflow">if</span> (!nrf6350_lcd_set_instruction(0x39))                 <span class="comment">// Choose two-line mode</span>
<a name="l00094"></a>00094     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00095"></a>00095   <span class="keywordflow">if</span> (!nrf6350_lcd_set_instruction(0x14))                 <span class="comment">// Internal OSC frequency</span>
<a name="l00096"></a>00096     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00097"></a>00097   <span class="keywordflow">if</span> (!nrf6350_lcd_set_contrast(LCD_CONTRAST_HIGH))       <span class="comment">// Contrast set (low byte)</span>
<a name="l00098"></a>00098     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00099"></a>00099   <span class="keywordflow">if</span> (!nrf6350_lcd_set_instruction(0x5F))                 <span class="comment">// Power/ICON control/</span>
<a name="l00100"></a>00100     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00101"></a>00101   <span class="keywordflow">if</span> (!nrf6350_lcd_set_instruction(0x6A))                 <span class="comment">// Follower control</span>
<a name="l00102"></a>00102     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00103"></a>00103   nrf_delay_us(200000);                                   <span class="comment">// Need to wait 200ms here according to datasheet</span>
<a name="l00104"></a>00104   <span class="keywordflow">if</span> (!nrf6350_lcd_on())                                  <span class="comment">// Display ON</span>
<a name="l00105"></a>00105     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00106"></a>00106   <span class="keywordflow">if</span> (!nrf6350_lcd_clear())                               <span class="comment">// Clear display</span>
<a name="l00107"></a>00107     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00108"></a>00108   <span class="keywordflow">return</span> nrf6350_lcd_set_instruction(0x06);               <span class="comment">// Entry mode set</span>
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 
<a name="l00111"></a>00111 <span class="keywordtype">bool</span> nrf6350_lcd_write_string(<span class="keyword">const</span> <span class="keywordtype">char</span> *p_text, uint8_t size, uint8_t line, uint8_t pos)
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113   uint8_t i;
<a name="l00114"></a>00114 
<a name="l00115"></a>00115   data_buffer[0] = FUNC_SET;
<a name="l00116"></a>00116   data_buffer[1] = DDRAM_ADR + (pos + line);
<a name="l00117"></a>00117   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00118"></a>00118     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00119"></a>00119   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, empty_str, 18 - pos, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00120"></a>00120     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00121"></a>00121   data_buffer[0] = FUNC_SET;
<a name="l00122"></a>00122   data_buffer[1] = DDRAM_ADR + (pos + line);
<a name="l00123"></a>00123   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, 2, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00124"></a>00124     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00125"></a>00125   data_buffer[0] = DDRAM_WR;
<a name="l00126"></a>00126   <span class="keywordflow">for</span> (i=0;i&lt;size;i++)
<a name="l00127"></a>00127   {
<a name="l00128"></a>00128     <span class="keywordflow">if</span> (i == LCD_LLEN)
<a name="l00129"></a>00129       <span class="keywordflow">break</span>;
<a name="l00130"></a>00130     data_buffer[i+1] = (uint8_t)*p_text++;
<a name="l00131"></a>00131   }
<a name="l00132"></a>00132   <span class="keywordflow">return</span> <a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(LCD_ADDR &lt;&lt; 1, data_buffer, i+1, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 
<a name="l00135"></a>00135 <span class="keywordtype">bool</span>  nrf6350_js_get_value(int8_t *val)
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137   uint8_t js_data;
<a name="l00138"></a>00138 
<a name="l00139"></a>00139   <span class="keywordflow">if</span> (!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(JS_ADDR &lt;&lt; 1 | <a class="code" href="group__lib__driver__twi__master.html#ga67c0f91739433360f513b097acf11946" title="If this bit is set in the address field, transfer direction is from slave to master.">TWI_READ_BIT</a>, data_buffer, 1, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00140"></a>00140     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00141"></a>00141   js_data = (~data_buffer[0] &amp; 0x1D);               <span class="comment">// Select the useful bits</span>
<a name="l00142"></a>00142 
<a name="l00143"></a>00143   <span class="keywordflow">if</span>((js_data &amp; 0x01) != 0)                  <span class="comment">// Check joystick position</span>
<a name="l00144"></a>00144   {
<a name="l00145"></a>00145     val[X] = -1;
<a name="l00146"></a>00146   }
<a name="l00147"></a>00147   <span class="keywordflow">else</span> <span class="keywordflow">if</span>((js_data &amp; 0x10) != 0)
<a name="l00148"></a>00148   {
<a name="l00149"></a>00149     val[X] = 1;
<a name="l00150"></a>00150   }
<a name="l00151"></a>00151   <span class="keywordflow">else</span>
<a name="l00152"></a>00152   {
<a name="l00153"></a>00153     val[X] = 0;
<a name="l00154"></a>00154   }
<a name="l00155"></a>00155 
<a name="l00156"></a>00156   <span class="keywordflow">if</span>((js_data &amp; 0x04) != 0)
<a name="l00157"></a>00157   {
<a name="l00158"></a>00158     val[Y] = 1;
<a name="l00159"></a>00159   }
<a name="l00160"></a>00160   <span class="keywordflow">else</span> <span class="keywordflow">if</span>((js_data &amp; 0x08) != 0)
<a name="l00161"></a>00161   {
<a name="l00162"></a>00162     val[Y] = -1;
<a name="l00163"></a>00163   }
<a name="l00164"></a>00164   <span class="keywordflow">else</span>
<a name="l00165"></a>00165   {
<a name="l00166"></a>00166     val[Y] = 0;
<a name="l00167"></a>00167   }
<a name="l00168"></a>00168   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170 
<a name="l00171"></a>00171 <span class="keywordtype">bool</span> nrf6350_js_get_status(uint8_t *<a class="code" href="group__n_r_f6350__radio__configuration__example.html#ga4e2a80797a9e4811297e67afc6bd478b">js_state</a>)
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173   uint8_t js_data;
<a name="l00174"></a>00174 
<a name="l00175"></a>00175   <span class="keywordflow">if</span>(!<a class="code" href="group__lib__driver__twi__master.html#ga36e8039d4cbb4f66c0cf0cf1e3a72445">twi_master_transfer</a>(JS_ADDR &lt;&lt; 1 | <a class="code" href="group__lib__driver__twi__master.html#ga67c0f91739433360f513b097acf11946" title="If this bit is set in the address field, transfer direction is from slave to master.">TWI_READ_BIT</a>, &amp;js_data, 1, <a class="code" href="group__lib__driver__twi__master.html#ga13a824cf1c6a37f2ddea21c962128a3e" title="Parameter for twi_master_transfer.">TWI_ISSUE_STOP</a>))
<a name="l00176"></a>00176   {
<a name="l00177"></a>00177     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00178"></a>00178   }
<a name="l00179"></a>00179   js_data = ~js_data;
<a name="l00180"></a>00180   *js_state = js_data &amp; 0x1F;
<a name="l00181"></a>00181   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 
<a name="l00184"></a>00184 <span class="comment">/*lint --flb &quot;Leave library region&quot; */</span>
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